EP 3480613 A1 20190508 - METHOD FOR MEASURING THE INTERNAL RESISTANCE OF BATTERIES
Title (en)
METHOD FOR MEASURING THE INTERNAL RESISTANCE OF BATTERIES
Title (de)
VERFAHREN ZUR MESSUNG DES INNENWIDERSTANDES VON BATTERIEN
Title (fr)
PROCÉDÉ DE MESURE DE LA RÉSISTANCE INTERNE DE BATTERIES
Publication
Application
Priority
CN 201711058232 A 20171101
Abstract (en)
The present disclosure provides a method for measuring an internal resistance of a battery, after discharging/charging the battery under a preset constant-current, acquiring voltages of the battery within a period from ending the discharging/charging to a time when the voltage reaches stable, and then calculating different corresponding internal resistances caused by ohmic polarization, electrochemical polarization and concentration polarization separately. Since it is different for the orders of the magnitude of the characteristic time which these different polarizations need to get back into new equilibrium state after ending the discharging/charging, the method of the present disclosure classifies the internal resistances caused by these polarizations and calculated different internal resistances corresponding to the polarizations. Both the comparison with a result measured by other method and multiple embodiments in the application justify that the method in the present disclosure has high reliability and strong practicability.
IPC 8 full level
G01R 31/367 (2019.01); G01R 31/389 (2019.01)
CPC (source: EP US)
G01R 31/367 (2018.12 - EP US); G01R 31/3835 (2018.12 - US); G01R 31/389 (2018.12 - EP US); H01M 10/44 (2013.01 - US); H01M 10/486 (2013.01 - EP US); G01R 27/02 (2013.01 - US); Y02E 60/10 (2013.01 - EP)
Citation (applicant)
CN 103529301 A 20140122 - SAIC MOTOR CORP LTD
Citation (search report)
- [XI] US 2013138369 A1 20130530 - PAPANA ANKI REDDY [IN], et al
- [I] WO 2017006319 A1 20170112 - ALGOLION LTD [IL]
- [I] US 2011301931 A1 20111208 - GERING KEVIN L [US]
- [I] WHITE CHRIS ET AL: "Evolution of internal resistance during formation of flooded lead-acid batteries", JOURNAL OF POWER SOURCES, ELSEVIER SA, CH, vol. 327, 22 July 2016 (2016-07-22), pages 160 - 170, XP029694637, ISSN: 0378-7753, DOI: 10.1016/J.JPOWSOUR.2016.07.020
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3480613 A1 20190508; EP 3480613 B1 20230906; CN 109752663 A 20190514; US 10921380 B2 20210216; US 2019128969 A1 20190502
DOCDB simple family (application)
EP 18203829 A 20181031; CN 201711058232 A 20171101; US 201816177355 A 20181031